[5] Horvath served as the first community physician at Mount Druitt Centre in the early days of the Western Metropolitan Health Region.
This led to her becoming Principal Adviser in Community Services in the Health Commission of New South Wales, which were formative years for the establishment of the National Community Health Program under the Whitlam government.
[6] She was awarded the Centenary Medal in 2001 for "service to Australian society in business leadership".
After graduation and three years' practice as junior doctors in Sydney, the two worked together at Johns Hopkins Hospital in Maryland in the United States in the 1970s before returning to Australia.
One is a medical oncologist at the Chris O'Brien Lifehouse near the Royal Prince Alfred Hospital and a graduate of the Horvaths' alma mater, the University of Sydney;[9] the other is an arts/law graduate of the Australian National University.